I'm building an all motor LS, before I get into my questions here's my build:

LS block, rods
USDM ITR 0.25 pistons, rings
USDM ITR girdle
USDM ITR oil pump
OEM main and rod bearings
ARP rod bolts, head studs
10.3:1 C/R.
ported/polished head (mild, nothing crazy)
crower retainers and springs
OEM new guides and seals
Colt regrind cams http://www.coltcams.com
Ferrea valves

My questions are mainly:
1) Do B18a pistons pins fit with the LS rod/ITR piston combo?
2) Opinions on buying a complete head vs. assembling locally, pricing/quality issue:
- Estimated parts list at $800 without labour .. gimme some options fellas!
3) Since I want a milder, very streetable setup, are the Ferrea valves necessary? Alternatives?
4) Will an ITR intake mani and throttle body work with the LS, or should I just use Skunk2/Erick's racing instead?

Thanks in advance.

 

no one? come on guys!